Asymptotic binary Goldbach and Lemoine conjecture

Let $n$ be an even positive integer. An odd prime is a prime number other than $2$. Asymptotic binary Goldbach and Lemoine conjecture. For every sufficiently large even number $n$, there exist odd primes $p_m$, $p_t$, and $p_o$ with $(p_m,n)=1$ such that

$$p_mp_o\equiv -p_mp_t\pmod n.$$

This is a congruence assertion involving products of odd primes modulo sufficiently large even integers. The supplied text gives no resolution or further context for the conjecture.